PIC16CE625T-04/SS Equivalent & Substitute Parts

Part Overview

The PIC16CE625T-04/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP (One-Time Programmable) memory, 13 I/O pins, and operation at 4MHz. This device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Finding equivalent substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when higher performance specifications are needed, or when inventory constraints affect procurement timelines.

Substiute Parts

PIC16CE625T-04/SS

Microchip TechnologyIn Stock: 1051PIC16CE625T-04/SS Datasheet

Current PartRFQ

PIC16F628AT-I/SS

Microchip TechnologyIn Stock: 3329PIC16F628AT-I/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16CE625T-04/SS is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Core processor architecture (PIC family)
• Package type (20-SSOP form factor)
• Voltage supply range (3V ~ 5.5V)
• Program memory size (4.6KB minimum)
• Surface mount mounting type
• Pin count and I/O configuration

Allowable Variation Parameters:

• Program memory type (OTP to FLASH conversion permitted for reprogrammability)
• Operating speed (4MHz to higher frequencies acceptable)
• Operating temperature range (expansion from 0°C ~ 70°C to -40°C ~ 85°C acceptable)
• RAM size (expansion from 128 x 8 acceptable)
• Additional peripherals (PWM, UART/USART addition acceptable)

The PIC16F628AT-I/SS qualifies as a direct substitute based on identical package, voltage supply, program memory size, and core architecture, with improvements in memory type and operational specifications.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F628AT-I/SS serves as a qualified substitute for the PIC16CE625T-04/SS based on the following engineering criteria:

Compliance & Certification Alignment: Both devices maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and identical voltage supply specifications (3V ~ 5.5V). Both are classified as Active product status with verified programmability through DiGi-Electronics.

Memory Architecture Compatibility: Identical program memory capacity (4.6KB) and EEPROM size (128 x 8) ensure code compatibility. The transition from OTP to FLASH memory type enables field reprogrammability without requiring device replacement for firmware updates.

Package & Mechanical Compatibility: Identical 20-SSOP package dimensions (0.209", 5.30mm Width) and surface mount configuration permit direct PCB layout compatibility without redesign.

Performance Enhancement: The PIC16F628AT-I/SS provides expanded operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), increased clock speed (20MHz versus 4MHz), additional I/O pins (16 versus 13), and expanded RAM (224 x 8 versus 128 x 8). These enhancements do not introduce incompatibility; they extend operational capability.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F628AT-I/SS directly replace the PIC16CE625T-04/SS in existing designs?

A: Yes. Both devices share identical package geometry (20-SSOP), voltage supply range (3V ~ 5.5V), program memory size (4.6KB), and pin configuration. PCB layout and power supply design require no modification. Firmware compatibility depends on code written to the common instruction set; existing OTP code transfers directly to FLASH memory.

Q: What is the primary functional difference between these devices?

A: The PIC16CE625T-04/SS uses OTP (One-Time Programmable) memory, which cannot be erased or reprogrammed after initial programming. The PIC16F628AT-I/SS uses FLASH memory, which supports unlimited erase/reprogram cycles. This distinction affects development workflow and field serviceability but not electrical compatibility.

Q: Are there pin-count differences that affect circuit design?

A: The PIC16F628AT-I/SS provides 16 I/O pins compared to 13 on the PIC16CE625T-04/SS. Both devices use the same 20-SSOP package. The additional I/O pins are available for expanded functionality; existing designs using only 13 pins operate without modification.

Q: Do operating temperature ranges affect substitution suitability?

A: The PIC16F628AT-I/SS operates across -40°C ~ 85°C, while the PIC16CE625T-04/SS operates across 0°C ~ 70°C. For applications within the 0°C ~ 70°C range, both devices perform identically. For applications requiring extended temperature operation below 0°C or above 70°C, only the PIC16F628AT-I/SS qualifies.

Q: Is firmware modification required when switching from OTP to FLASH?

A: No firmware modification is required. Both devices execute the same PIC 16-bit instruction set. Code written for the PIC16CE625T-04/SS executes identically on the PIC16F628AT-I/SS. The FLASH memory type simply enables reprogramming capability without code changes.

Q: What compliance certifications apply to both devices?

A: Both devices maintain ROHS3 compliance, carry unlimited moisture sensitivity rating (MSL 1), and hold REACH Unaffected status. Both are classified as Active products with verified programmability. Regulatory and environmental requirements are satisfied identically by both parts.